Commit-ID: e6c390f2dfd04c165ce45b0032f73fba85b1f282 Gitweb: http://git.kernel.org/tip/e6c390f2dfd04c165ce45b0032f73fba85b1f282 Author: Dario Faggioli <[email protected]> AuthorDate: Thu, 7 Nov 2013 14:43:35 +0100 Committer: Ingo Molnar <[email protected]> CommitDate: Wed, 27 Nov 2013 14:08:50 +0100
sched: Add sched_class->task_dead() method Add a new function to the scheduling class interface. It is called at the end of a context switch, if the prev task is in TASK_DEAD state. It will be useful for the scheduling classes that want to be notified when one of their tasks dies, e.g. to perform some cleanup actions, such as SCHED_DEADLINE. Signed-off-by: Dario Faggioli <[email protected]> Reviewed-by: Paul Turner <[email protected]> Signed-off-by: Juri Lelli <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Signed-off-by: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- kernel/sched/core.c | 3 +++ kernel/sched/sched.h | 1 + 2 files changed, 4 insertions(+) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 19db8f3..25b3779 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2003,6 +2003,9 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev) if (unlikely(prev_state == TASK_DEAD)) { task_numa_free(prev); + if (prev->sched_class->task_dead) + prev->sched_class->task_dead(prev); + /* * Remove function-return probe instances associated with this * task and put them back on the free list. diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 88c85b2..b3b4a49 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1023,6 +1023,7 @@ struct sched_class { void (*set_curr_task) (struct rq *rq); void (*task_tick) (struct rq *rq, struct task_struct *p, int queued); void (*task_fork) (struct task_struct *p); + void (*task_dead) (struct task_struct *p); void (*switched_from) (struct rq *this_rq, struct task_struct *task); void (*switched_to) (struct rq *this_rq, struct task_struct *task); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
